mui / mui/material-ui

Arrow key navigation failing when component is rendered in closed shadow DOM

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#48,252 2 comments 0 reactions 1 assignee View on GitHub

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type: bug
Dominant language
JavaScript
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Description

Steps to reproduce

Steps:

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Current behavior

https://github.com/mui/material-ui/blob/master/packages/mui-utils/src/getActiveElement/getActiveElement.ts
https://github.com/mui/material-ui/blob/master/packages/mui-material/src/Unstable_TrapFocus/FocusTrap.tsx

getActiveElements tries to resolve the active Element:

element.shadowRoot.activeElement

This only works if shadowRoot is open. If shadowRoot is closed, element.shadowRoot is always null

There was already an issue ( https://github.com/mui/material-ui/issues/34061 ) which resolved it for the open shadowRoot

Expected behavior

No response

Context

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Your environment
npx @mui/envinfo
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  Output from `npx @mui/envinfo` goes here.

Search keywords: shadow dom keyboard select

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